using Unity.Netcode;
using UnityEngine;

namespace Northbound
{
    /// <summary>
    /// 플레이어의 자원 인벤토리 관리
    /// </summary>
    public class PlayerResourceInventory : NetworkBehaviour
    {
        [Header("Inventory Settings")]
        public int maxResourceCapacity = 100; // 최대 자원 보유량

        private NetworkVariable<int> _currentResourceAmount = new NetworkVariable<int>(
            0,
            NetworkVariableReadPermission.Everyone,
            NetworkVariableWritePermission.Server
        );

        public int CurrentResourceAmount => _currentResourceAmount.Value;
        public int MaxResourceCapacity => maxResourceCapacity;

        /// <summary>
        /// 자원을 추가할 수 있는지 확인
        /// </summary>
        public bool CanAddResource(int amount)
        {
            return _currentResourceAmount.Value + amount <= maxResourceCapacity;
        }

        /// <summary>
        /// 추가 가능한 최대 자원량 계산
        /// </summary>
        public int GetAvailableSpace()
        {
            return maxResourceCapacity - _currentResourceAmount.Value;
        }

        /// <summary>
        /// 자원 추가 (서버에서만 호출)
        /// </summary>
        [Rpc(SendTo.Server, InvokePermission = RpcInvokePermission.Everyone)]
        public void AddResourceServerRpc(int amount)
        {
            if (amount <= 0) return;

            int actualAmount = Mathf.Min(amount, maxResourceCapacity - _currentResourceAmount.Value);
            _currentResourceAmount.Value += actualAmount;

            Debug.Log($"플레이어 {OwnerClientId} - 자원 추가: +{actualAmount}, 현재: {_currentResourceAmount.Value}/{maxResourceCapacity}");
        }

        /// <summary>
        /// 자원 제거 (서버에서만 호출)
        /// </summary>
        [Rpc(SendTo.Server, InvokePermission = RpcInvokePermission.Everyone)]
        public void RemoveResourceServerRpc(int amount)
        {
            if (amount <= 0) return;

            int actualAmount = Mathf.Min(amount, _currentResourceAmount.Value);
            _currentResourceAmount.Value -= actualAmount;

            Debug.Log($"플레이어 {OwnerClientId} - 자원 사용: -{actualAmount}, 현재: {_currentResourceAmount.Value}/{maxResourceCapacity}");
        }

        /// <summary>
        /// 자원 설정 (서버에서만 호출)
        /// </summary>
        [Rpc(SendTo.Server, InvokePermission = RpcInvokePermission.Everyone)]
        public void SetResourceServerRpc(int amount)
        {
            _currentResourceAmount.Value = Mathf.Clamp(amount, 0, maxResourceCapacity);
        }
    }
}